To draw a 3D cube, we have to draw it extended that will allow to receive the 3D image at change of a viewing angle. We have to paint over each cell of a cube in different colors, the author does it by a brush, you can use that you have colored pencils, markers. We paint over space a black pencil a marker, then a white gel pen draws patches of light and point strokes from patches of light. If you do not have it, simply leave places under white strips, without painting over them. Do a shadow to the right of a cube of a rubik and cut out exactly paper slightly lower than a level of a cube, flowing round it. See on video or screens below as. Now change a viewing angle that 3D drawing on paper turned out.

We a cube rubik will have the second option in a condition of a levitation. Besides we need to draw its image in space long, to be necessary for you the ruler exactly to line cells. Paint each plane of a cube in one color, distance in black color, leaving patches of light, on the right do a shadow (shade a square and shade). Cut off a cube rubik, leaving only from below a white platform. In total.

This video in pictures.

You can look still at a 3D ball, a triangle, an unclear figure, a rectangle.